【答案】:C 20、下列各项步骤中,哪一个不是创建进程所必须的步骤( )。 PC CPU 调度程序为进程调度 CPU
PCB 链入进程就绪队列 【答案】:B 21、BGP runs over a reliable transport ( ). This eliminates the need to implement explicit update fragmentation, retransmission, acknowledgement, and ( ). Any authentication scheme used by the transport protocol may be used in addition to BGP's own (请作答此空)mechanisms. The error notification mechanism used in BGP ( )that the transport protocol supports a “graceful” close, ., that all outstanding data will be delivered ( )the connection is closed.